Influence of ageing, silver loading and type of reducing agent on the lean NOx reduction over Ag-Al2O3 catalysts
Artikel i vetenskaplig tidskrift, 2013
The influence of ageing temperature, silver
loading and type of reducing agent on the lean NOx
reduction over silver–alumina catalysts was investigated
with n-octane and bio-diesel (NExBTL) as reducing agent.
The catalysts (2 and 6 wt% Ag–Al2O3) were prepared with
a sol–gel method including freeze drying and the evaluation
of NOx reduction and aging were performed using a
synthetic gas-flow reactor. The results indicate a relatively high NOx reduction for both reducing agents. The hydrothermally treated 6 wt% Ag–Al2O3 sample displays a
maximum NOx reduction of 78 % at 350 C for n-octane as
reductant and the corresponding value for NExBTL is
60 %. Furthermore, the catalysts show high durability and
an increase in activity for NOx reduction after ageing at
temperatures up to 650 C,with n-octane as reducing
agent.
n-octane
Ag–alumina
HC-SCR
bio-diesel
ageing
Författare
Fredrik Gunnarsson
Kompetenscentrum katalys
Chalmers, Kemi- och bioteknik, Teknisk ytkemi
Jenny-Yue Zheng
Chalmers, Kemi- och bioteknik
Kompetenscentrum katalys
Hannes Kannisto
Kompetenscentrum katalys
Chalmers, Kemi- och bioteknik, Teknisk ytkemi
Clement Cid
Chalmers, Kemi- och bioteknik
Anna Maria Lindholm
Volvo Group
Miroslawa Milh
Volvo Group
Magnus Skoglundh
Chalmers, Kemi- och bioteknik, Teknisk ytkemi
Kompetenscentrum katalys
Hanna Härelind
Kompetenscentrum katalys
Chalmers, Kemi- och bioteknik, Teknisk ytkemi
Topics in Catalysis
1022-5528 (ISSN) 1572-9028 (eISSN)
Vol. 56 1-8 416-420Drivkrafter
Hållbar utveckling
Styrkeområden
Nanovetenskap och nanoteknik
Transport
Energi
Materialvetenskap
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Kemiska processer
Fundament
Grundläggande vetenskaper
DOI
10.1007/s11244-013-9989-1